Schottel (company)
Coordinates: 50 ° 15 '24.5 " N , 7 ° 38' 54.3" E
| Schottel | |
|---|---|
| legal form | GmbH |
| founding | 1921 |
| Seat |
Spay , Dörth Germany
|
| management | Stefan Kaul |
| Number of employees | approx. 1300 (Schottel Group) |
| sales | 314 million euros (2015) (Schottel Group) |
| Branch | Ship engineering drive technology |
| Website | www.schottel.de |
The Schottel Group , headquartered in Spay am Rhein, develops, designs, produces and sells fully controllable ship propulsion and maneuvering systems as well as complete propulsion systems with an output of up to 30 MW.
The name of the medium-sized company goes back to the shoal "Auf der Schottel", which is in the immediate vicinity of its location at Rhine kilometer 576.5.
Company history
The company was founded in 1921 by Josef Becker (1897–1973) in the barn of his craft business in Spay . Becker constructed a dinghy for Partikuliere , the "Schottel sloop", of which he sold around 16,000 copies from 1922 onwards. The first diesel motor boat was built in 1928 . In 1934 Becker acquired today's company premises at Rheinkilometer 578.5 and ran his company under the name "Schottel-Werft". The shipyard experienced a strong boom in the early 1950s with the development and construction of the rotatable Schottel rudder propeller , which made the rudder blade superfluous and ships more maneuverable. Josef Becker was posthumously awarded the Elmer A. Sperry Award in 2005 for this invention, which made a significant contribution to the improvement of global transport .
In 1958, he founded the first foreign subsidiary in the Netherlands . In 1967 the first port tug with Schottel propulsion began its service, and in 1978 the "Schottel Pump-Jet" (SPJ) was developed. Also in 1978 the subsidiary Schottel do Brasil was founded in Rio de Janeiro . In 1986 the Schottel shipyard delivered the first of the largest rudder propeller systems to date (SRP 4500). They had an output of 6000 kW and were intended for the Saipem 7000 floating crane .
In 1989 the company was restructured and certified according to DIN EN ISO 9001 . In 1995 it founded the subsidiary Suzhou Schottel Propulsion Co. in the People's Republic of China and then the Siemens-Schottel Propulsor consortium . In 1998 the joint venture company Schottel Inc. was founded in Texas, USA. In 1999 Schottel took over Wismarer Propeller- und Maschinenbau GmbH (WPM) and in the same year founded the companies Schottel-Schiffsmaschinen GmbH and Schottel-Antriebstechnik GmbH based in Wismar . In 2003 the "Schottel Combi Drive" was developed. On June 29, 2007, the previous parent company ( Schottel GmbH & Co. KG ) in Spay was merged with Schottel-Antriebstechnik GmbH in Wismar to form Schottel GmbH , based in Spay and with a branch in Wismar.
On August 15, 2012, the company announced the acquisition of eight hectares of industrial property in Dörth , on which it was building a rudder propeller factory and an administration building. In the four halls, which are up to 270 meters long, the company produces and tests drives with up to 3000 kW. The old factory site in Spay has served as a service warehouse ever since.
The Schottel Group includes:
- Schottel GmbH, Spay with production facility in Dörth
- Schottel GmbH Wismar branch, Wismar
- Schottel Suzhou Propulsion Co. Ltd., China
- Schottel Suzhou Trading & Service Co. Ltd., China
- Schottel Nederland BV, Netherlands
- Schottel-France sarl, France
- Schottel Inc., USA
- Schottel do Brasil Propulsões Marítimas LTDA., Brazil
- Schottel Far East (Pte.) Ltd., Singapore
- Schottel Middle East FZE, Dubai
- OOO Schottel Russia
- Schottel Middle East FZE
- Schottel Australia
- Schottel Norway
Product development
The following components form the core business of the Schottel Group today.
Schottel Rudder Propeller (SRP)
The development and construction of the Schottel rudder propeller (SRP) in 1950 represented a milestone in control technology, as the drive jet , which can be swiveled through 360 °, made it possible to do without a rudder blade from now on . The new type of control increased the maneuverability of the ships. In the next ten years, the new drive technology caught on even with large ship units, and so the first port tug with Schottel drive went into service in 1967 . In the meantime, rudder propeller systems with an output of 100 kW to 6000 kW and a propeller diameter of 0.7 m to 4.2 m are manufactured, and special designs such as non-magnetic, shock-resistant and low-noise drive units are also offered.
The software "Hydra" specially developed by Schottel enables resistance prognoses to be carried out in order to calculate the ratio of power to speed.
Schottel twin propellers (STP)
The demand for ever higher propulsion power could initially be answered with larger rudder propellers. There were limits to the mechanical stress and the fact that the larger the propeller diameter, the greater the draft of the ship. One solution is the twin propeller (STP), in which the required power is divided between two rudder propellers rotating in the same direction. With this arrangement, the propeller loads are halved and, at the same time, with smaller diameters, the use of twin propellers is also interesting in shallower waters. A guide fin integrated between the two propellers minimizes the loss of twist of the towing propeller and promotes the flow of air to the pusher propeller. The twin propeller can also be rotated 360 ° and is located in a streamlined housing. Twin propellers are used in power classes from 195 kW to 2900 kW and with a propeller diameter of 0.8 to 2.6 m.
Schottel Pump-Jet (SPJ)
Schottel Pump-Jet
Schematic sketch of the Schottel Pump-Jet
Schottel Pump-Jet, bottom openings
With the increase in coastal, inland and recreational shipping, the desire arose to maneuver safely even in shallow waters. For this purpose, a compact, flat drive unit, the Schottel Pump-Jet (SPJ), was developed, which can be integrated flush into the ship's hull . The Pump-Jet is basically a centrifugal pump, the suction and pressure sides of which are located behind two openings in the bottom of the fuselage. The drive jet leaves the pressure side of the pump and then the fuselage at an angle of 15 ° and can be rotated through 360 °.
The pump jet propulsion has proven itself not only in shallow waters, but also proves to be a valuable bow control element , which can be used by switching off the propeller to e.g. B. to save accident victims safely. The Pump-Jet can be used as the sole drive, but also as an additional unit, with a single system output of up to 3500 kW. In terms of flow, the maximum possible speed of a watercraft with a pump jet drive is reached at 15–16 knots (approx. 27–30 km / h).
Schottel Combi Drive (SCD)
The Schottel Combi Drive (SCD) is based on the combination of the main technical and economic criteria of mechanical rudder propellers on the one hand and pod drives on the other . In contrast to the pod drive with an electric motor in the underwater pod, the electric motor of the Combi Drive is vertically integrated into the support tube of the rudder propeller. This arrangement of the electric motor makes the concept comparable to a rudder propeller with a vertical power input (L system). Since neither head gear nor cardan shaft are required, the system is extremely compact and, from the point of view of the shipyard, easy and very space-saving to install in the ship. The Schottel Combi Drive is available as a pressure and twin propeller with an output of up to 3800 kW.
A complete drive unit (navigator) for simple ships, consisting of the components chassis, motor, coupling, cardan shaft and rudder propeller, was developed to minimize the installation effort. The unit, which looks like a container , is placed on the ship's deck , is quickly ready for use and easy to maintain.
Schottel controllable pitch propeller (SCP)
The use of adjustable propellers (SCP) is an advantage in order to use the ever larger and more expensive ship units as full as possible and to operate them with good efficiency and cost-effectively even when they are partially used . With their use, it became possible to flow around the propeller blades in a laminar manner even at a lower flow velocity and to avoid lossy wake vortices. At the same time, the controllable pitch propeller offers the option of steering from “ahead” to “back” while the engine is running and at a minimum speed, which means that the reversing gear is no longer necessary and can be replaced by a reduction gear . Particular attention is paid to cavitation phenomena, which are countered by suitable flow guidance. Variable-pitch propellers are used in power classes from 1000 kW to 30,000 kW and with a propeller diameter of 1.5 to 8.0 m.
Cross-jet system (STT)
The Schottel product range is completed by side-mounted propeller underwater gearboxes up to 1400 kW, equipped with fixed or adjustable propellers and designed to be low-noise if required.
Projects (selection)
| Construction year | Surname | product | Client / owner / operator | Remarks |
|---|---|---|---|---|
| 2013 | Vidar | 4 × SCD 2020 3 × STT 3030 |
HOCHTIEF Solutions AG
|
Installation ship |
| 2013 | Cerro Itamut | 2 × SRP 2020 |
 Panama Canal Authority
|
Tractor tractor |
| 2013 | HOS Red Dawn | 2 × SRP 2020 2 × STT 4 |
 Hornbeck Offshore Services
|
Offshore supply ship |
| 2012 | Lolland | 4 × STP 550 |
 Faergen
|
Double-ended ferry |
| 2012 | Starnav Perseus | 2 × SCD 2020 2x STT 2 |
 Starnav
|
Platform supply ship |
| 2011 | Bibby Tethra | 2 × SPJ 57 RD |
 Osiris Projects
|
Research ship |
| 2010 | Calovébora | 2 × SRP 1515 |
Panama Canal Authority
|
Rear tractor |
| 2010 | Baltic | 2 × SCP 100-4XG 4 × STT |
Fairplay tugboat shipping company Richard Borchard GmbH
|
Sea rescue tug from the Federal Ministry of Transport, Building and Urban Development (BMVBS) |
| 2009 | Adriaan | 3 × SRP 1215 |
 Kotug International BV
|
Rotor tug |
| 2007 | Janus | 2 × SCP 119-4XG 3 × STT 330 T-LK CP |
Harms Bergung GmbH & Co. KG
|
Anchor-pulling , long-range and salvage tugs |
| 2005 | SyltExpress | 2 × STP 1212 |
Förde shipping company Seetouristik
|
Double-ended ferry |
| 2004 | Empress of the North | 2 × STP 1212 1 × SPJ 220 |
Majestic America Line
|
Paddle wheel ship |
| 2004 | RheinEnergie | 2 × STP 440 |
Cologne-Düsseldorfer AG
|
Day trip and event ship |
| 2004 | Arkona | 2 × SSP 2 1 × SPJ 220 |
.svg){kind=small} WSA Stralsund
|
Pollution Control Ship (SUBS) |
| 2001 | Peter Pan | 2 × SSP 10 |
TT-Line GmbH and Co. KG
|
RoPax ferry |
| 1999 | Fair play 25 | 2 × SRP 1515 CPP |
Fairplay Reederei GmbH
|
ASD tractor ( bollard pull : 65 t) |
| 1998 | Berlin | 2 × SCP 141-4XG |
 German Navy
|
Task force provider class 702 |
| 1997 | Neuwerk | 2 × SRP 3030 1 × SPJ 520 |
Federal Ministry of Traffic, Construction and City Development
|
Multipurpose ship |
| 1996 | Goethe | 1 × SPJ 57 1 × STT 060 |
Cologne-Düsseldorfer AG
|
Paddle wheel ship |
| 1988 | M-boat 3 | 2 × SPJ 55 M |
armed forces
|
Multi-purpose boat of the engineer force |
| 1986 | Saipem 7000 | 4 × SRP 4500 |
 Micoperi Srl / Saipem SpA
|
Largest SRP unit upon delivery (4500 kW) |
| 1955 | City of Boppard | 1 × SRP 1 × NAV |
Fam. Deleu
|
Rhine ferry , built in 1892, remodeled in 1955 |
literature
- Shipbuilding Society: 100 Years Shipbuilding Society - Biographies on the History of Shipbuilding , Springer, Berlin, 1999, ISBN 3-540-64150-5 , p. 33.
Web links
Individual evidence
- ↑ a b Information on the Schottel Group. Schottel GmbH, accessed on January 12, 2016 .
- ^ History. Schottel GmbH, accessed on August 19, 2012 .
- ↑ Schottel acquires 8 hectare industrial property in Dörth. Schottel GmbH, accessed on August 19, 2011 .
- ↑ Schottel shipyard expands in Dörth near Emmelshausen . In: Rhein-Zeitung . August 15, 2012 ( online edition ).
- ↑ Sabrina Junge: The right twist . In: Deutsche Seeschifffahrt , issue Jan./Feb. 2016, pp. 34–37, Association of German Shipowners eV, Hamburg 2016
- ↑ A new generation of Schottel cross-jet systems , accessed on March 22, 2014